At 17.17 hours on 6 May 1941 the Dunkwa (Master John William Andrew), dispersed from convoy OB-310, was hit aft by one stern torpedo from U-103 and sank within 8 minutes 216 miles west-northwest of Freetown. Five crew members and three gunners were lost. The Germans noticed that the 39 survivors were in only one overcrowded lifeboat, so they righted a swamped lifeboat and provided water to the survivors. The master, 37 crew members and one gunner were picked up by the Polydorus and landed at Oban.